| link
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From
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To
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Geolocation
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Author - title
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Year
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|---|---|---|---|---|---|
| details | Middle Ordovician | USSR(Siberia) | Lopushinskaya,T.V. et al. The Ordovician and Silurian of the Noginsk area of the Siberian Platform | 1983 | |
| details | Vendian | Early Paleozoic | USSR(Kazakh SSR) | Sargaskaev,Z.S. et al. Some chitinozoans in the Kokzhotsk series of the Karatai range | 1988 |